Cut through the grime with basic cleaners.
Wash with warm soapy water —Fill a sink or bucket with warm water and a mild dish soap. Submerge the vent covers and allow them to soak for several minutes. This will help loosen grime and make ...
Got a confidential news tip? We want to hear from you. Sign up for free newsletters and get more CNBC delivered to your inbox Get this delivered to your inbox, and ...